Solution to "can't be invoked from Azure WebJobs SDK. Is it missing Azure WebJobs SDK attributes?" when creating an Azure WebJob

I spent spent way too much time with this one. Hope this post saves you from doing the same.

Here’s the exception we are dealing with:

can’t be invoked from Azure WebJobs SDK. Is it missing Azure WebJobs SDK attributes?

I got this error when I was creating an on-demand WebJob. It should have take a few minutes to write the entire job, but the error message led me down a path and I put my blinders onto visibility issues. Based on the message, I spent a bunch of time researching Azure WebJobs attributes to no avail. I then broke the problem down by creating a new WebJob with only a few lines of code:

and I still got the issue. So I then did a line-by-line diff of a WebJob that was working and discovered that, by default, the WebJob VS template does not make the class public. So, I added the public keyword to the Program class and it fixed it. Here’s the code that will work:

It’s amazing how one little word can cause so much delay in a project.

Jon